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Finding the Fourth Proportional to 1,295,681.50, 1,787,928.39 and 836,816.10

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Solution

The fourth proportional to 1,295,681.50, 1,787,928.39 and 836,816.10 is: 1,154,733.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,681.50 : 1,787,928.39 = 836,816.10 : x
  2. Step 2: Convert to fraction form
    1,295,681.50/1,787,928.39 = 836,816.10/x
  3. Step 3: Cross multiply
    1,295,681.50x = 1,787,928.39 × 836,816.10
  4. Step 4: Simplify right side
    1,295,681.50x = 1,496,167,262,399.08
  5. Step 5: Solve for x
    x = 1,496,167,262,399.08/1,295,681.50
  6. Step 6: Final answer
    x = 1,154,733.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.